package com.kkshop.config;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class ConfigurationFilter implements Filter {
    
    private FilterConfig filterConfig;
    
    public void init(FilterConfig filterConfig) throws ServletException {
        this.filterConfig = filterConfig;
    }

    public void destroy() {
        filterConfig = null;
    }

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        if(Configuration.getInstance() == null) {
            Configuration.initialize(filterConfig.getServletContext().getResourceAsStream("/META-INF/configuration.xml"));
        }
        chain.doFilter(request, response);
    }
}
